Cobra Electronics 18 WXST II User Manual
How to Use Your
Cobra 18WXST II
Contents
Features
The CB Story. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1
Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . A2
Our Thanks to You . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3
Operating Your CB Mobile Radio
Installation/Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Turning On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CB Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Microphone Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Setting Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Channel 9/19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CB/Weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dual Watch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Soundtracker System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Activating Soundtracker System . . . . . . . . . . . . . . . . . . 11
S/RF Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RX/TX Indicator LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Antenna Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . . 14
Temporary Mobile Operation. . . . . . . . . . . . . . . . . . . . . 14
Operation to Receive/Transmit . . . . . . . . . . . . . . . . . . . 15
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Frequency Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 21
Accessories Order Info . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
If You Think You Need Service . . . . . . . . . . Back Cover
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Licensing/Warning/Included Accessories . . . . . . . A1
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . A3
Features of This Product
• 40 CB Radio Channels
• 10 Weather Channels
M
• Soundtracker
• Instant Channel 19 and 9
• 40 Channel Scan
• Dual Watch
• Front Firing Speaker
• Channel Saver Circuitry
• Dynamic Microphone
• 9 Foot Mic Cord
• Front Panel Microphone
Connector
T
System
1
OperationInstallation
CB Tranceiver
EXT. SPKR.
POWER
13.8V DC
ANTENNA
Mounting and
Connections
Note
The transceiver is held in the
universal mounting bracket by
two thumb screws, permitting
adjustment at the most convenient angle.
A universal mounting bracket
is supplied along with self tapping screws and star washers.
To mount the transceiver:
Mounting and Connections
Select a location for the transceiver and microphone bracket that is convenient for operation.
In automobiles, the transceiver is usually mounted
to the underneath of the dash panel, with the
microphone bracket beside it.
1Hold the radio with mounting bracket in the
exact location desired. Remove the mounting
bracket and use it as a template to mark the
location for the mounting screws.
CB Transceiver
2Drill necessary holes and secure mounting
bracket in location.
3Connect the antenna cable plug to the recepta-
cle marked “ANT” on the back of the unit.
2
OperationInstallation
SQUELCH
VOLUME
DW
SCAN
S 1 3 5 9 +30
P .5 1 2 3 4
CB / WEATHER
CH 9 / 19
1
4Connect the red lead of DC power cord to an
accessory 12 volt fuse.
5Connect the orange lead to a constant 12v fuse
(ie: cigarette lighter or direct to battery)
6Connect the black lead to the negative side of
the automobile.This is usually the chassis.Any
convenient location with good electrical contact
(remove paint) may be used.
7Mount the microphone bracket on right side of
the transceiver or near it using two screws supplied.When mounting in an automobile,place
the bracket under the dash so the microphone
is readily accessible.
8Attach the 4-pin microphone cable to recepta-
cle on front of unit and install unit in bracketsecurely.
Mounting and
Connections
Note
Before installing the CB radio,
visually check the vehicle battery connections to determine
which battery terminal, positive or negative (positive is the
larger of the two) is grounded
to the engine block
(or chassis).
3
Operation
OFF
Turning on
Your Radio
CB Antenna
Note
Cobra loaded-type antenna
models HGA 1000, HGA 1500,
and HGA 2000 are highly recommended for most installations. Consult your Cobra dealer for further details (or see
order form at the back of
this book).
3-Way Combination Antennas
are available which allow operation of all three bands (AM-FM
& CB), using a single antenna.
However,use of this type of
antenna usually results in less
than normal transmit and
receive range when compared
to a standard-type "Single
Band" antenna designed for
CB only.
Turning on
Turn volume control clockwise to turn power on
and set the desired listening volume.
CB Antenna
Only a properly matched antenna system will
allow maximum power output.
In mobile installations (cars, trucks, boats, etc.),
an antenna system that is non-directional should
be used.
When installed in a boat,the transceiver will not
operate at maximum efficiency without a ground
plate unless the vessel has a steel hull.Before
installing the transceiver in a boat,consult your
dealer for information regarding an adequate
grounding system.
4
Operation
OFF
OFF
SHIELD
AUDIO
RX
TX
1
2
3
4
Microphone Connector
Allows for convenient removal of the microphone
plug when storage is required.The microphone
MUST be connected to the unit at all times when in
use, for proper operation.
Squelch
This control is used to cut off or eliminate receiver
background noise in the absence of an incoming
signal. Adjust until the receiver noise disappears.
This will require the incoming signal to be slightly
stronger than average receiver noise. Further clockwise rotation will increase the threshold level
which a signal must overcome in order to be heard.
Only strong signals will be heard at a maximum
clockwise setting.
Microphone
Connector
Squelch
5
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
G AT E CL O SE D
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
G AT E
O P E N
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
Operation
OFF
OFF
Setting
Squelch
Gate closed
Gate open
Setting Squelch
Squelch is the “control gate”for incoming signals.
1. Full clockwise rotation closes the gate
allowing only very strong signals to enter.
2. Full counterclockwise rotation opens the “gate”
allowing all signals in.
6
Operation
NOISE
WEAK SIGNALS
MEDIUM SIGNALS
STRONG SIGNALS
G AT E
O
FF
3. To achieve the Desired Squelch Setting (DSS),
turn the Squelch control counterclockwise until
you hear noise. Now turn the control clockwise
just until the noise stops. This is the DSS setting.
Gate set to Desired
Squelch Setting (DSS)
7
Operation
Channel
Selection
Channel 9/
Channel 19
CB Weather
Set CB or WX Mode
Set on CB mode. Rotate channel knob clockwise
until desired channel is displayed.
Channel 9/Channel 19
Press CH 9/19 to obtain instant access to emergency
channel 9. Press again for information CH 19.
PRESS AND RELEASE
CB/Weather
CB mode is for normal CB operation.Press
CB/Weather again and select active Weather channel
in your area.
PRESS AND RELEASE
8
Operation
OFF
Dual Watch
This features allows the user to scan between two
selected channels.
1. Select first channel, CB mode.
PRESS AND HOLD
2. Press and hold DW until LED begins flashing and
beeps once.
3. Select second channel. Press DW until LED lights
steady and radio beeps twice. Two channels are
now stored in DW memory.
Scan
Press and release SCAN button to activate CB scan
mode. If the radio is squelched, radio begins to scan.
PRESS AND RELEASE
When scan is interrupted by a signal,scan stops and
holds until loss of signal. Press PTT on mic to stop
scan function. Press Scan to restart CB scan.
Dual Watch
Note
The radio needs to be
squelched before DW can
monitor both channels.
Scan
Note
On some channels squelch
setting might have to be re-set.
9
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